harmony 鸿蒙Resource Manager Development

2023-06-24
浏览 (911)

Resource Manager Development

How do I read an XML file in rawfile and convert the data in it to the string type?

Applicable to: OpenHarmony 3.2 Beta5 (API version 9)

Solution

Call getRawFileContent of the ResourceManager module to obtain the data in the XML file, and then use String.fromCharCode to convert the data to the string type.

Example

resourceManager.getRawFileContent('test.xml', (error, value) => {
  if (error != null) {
    console.log("error is " + error);
  } else {
    let rawFile = value;
    let xml = String.fromCharCode.apply(null, rawFile)
  }
});

Reference Link

Resource Manager

How do I obtain resources in the stage model?

Applicable to: OpenHarmony 3.1 Beta 5 (API version 9)

Solution

The stage model allows an application to obtain a ResourceManager object based on context and call its resource management APIs without first importing the required bundle. This mode does not apply to the FA model.

Example

const context = getContext(this) as any
context 
  .resourceManager
  .getString($r('app.string.entry_desc').id)
  .then(value => {
    this.message = value.toString()
})

How do I obtain the path of the resource directory by using an API?

Applicable to: OpenHarmony 3.1 Beta 5 (API version 9)

Symptom

How do I obtain the path of the resource directory so that I can manage the files in it by using the file management API?

Solution

Because the application is installed in HAP mode and the HAP package is not decompressed after the installation is complete, the resource path cannot be obtained when the program is running.

To obtain the path of the resource directory, try either of the following ways:

Use \$r or \$rawfile for access. This method applies to static access, during which the resource directory remains unchanged when the application is running.
Use ResourceManager for access. This method applies to dynamic access, during which the resource directory dynamically changes when the application is running.

Reference Link

Resource Categories and Access and Resource Manager

Why does getPluralString return an incorrect value?

Applicable to: OpenHarmony 3.2 Beta5 (API version 9)

Symptom

The value obtained by the getPluralString is other, which is incorrect.

Solution

The getPluralString API is effective only when the system language is English.

How do I obtain the customized string fields in the resources directory?

Applicable to: OpenHarmony 3.2 Beta5 (API version 9)

Solution

Use getStringValue of the ResourceManager module.

Reference Link

Resource Manager

How do I reference resources such as images and text in AppScope?

Applicable to: OpenHarmony 3.2 Beta5 (API version 9)

Solution

Reference resources in the \$r(‘app.type.name’) format. Wherein, type indicates the resource type, such as color, string, and media, and name indicates the resource name.

How do I convert resources to strings?

Applicable to: OpenHarmony 3.2 Beta5 (API version 9)

Solution

For a qualifier directory, use this.context.resourceManager.getStringSync(\$r(‘app.string.test’).id) to covert resources to strings synchronously. Note that the \$r(‘app.string.test’, 2) mode is not supported.

Reference Link

Resource Manager

Can $ be used to reference constants in the form_config.json file?

Applicable to: OpenHarmony 3.2 Beta5 (API version 9)

\$ cannot be used to reference constants in the form_config.json file.

How does ArkTS parse XML files?

Applicable to: OpenHarmony 3.2 Beta5 (API version 9)

Solution

Create the following XML file in the rawfile directory:

<?xml version="1.0" encoding="utf-8"?>
<user>
    <name>Jacky</name>
    <age>18</age>
</user>

Use resourceManager.getRawFileContent to obtain the byte arrays of the XML file.

import resourceManager from '@ohos.resourceManager';
resourceManager.getRawFileContent("test.xml", (error, value) => {
  if (error != null) {
    console.log("error is " + error);
    return
  }
  let arrayBuffer = value.buffer; // unit8Array
  var xmpParser = new xml.XmlPullParser(arrayBuffer);
  var tagName = ""
  //do something
}